Make sure that the folders you make are "PS3" (all capitals) and then make a folder in the PS3 folder called "THEME" (all capitals). After in the PS3 XMB go to Settings-Theme Settings and then click on install themes and then select it from you flash drive.
There's a couple of ways to do it: 1. Download the theme file to an external drive or card and use it to transfer the file to your PS3 if your PS3 has that capability, or 2. Use the PS3's browser to download the file directly to the PS3. To install it, go to the Theme Settings link on the XMB (under the System Update column) and use it to install the file you've just downloaded or transferred to your PS3. If you've downloaded it using the PS3's browser, the file will already be available for installation. If it's on an external flash drive or card, it'll give you the drive as a source for the install file. Select it and run the install and it will become available on a list with any other installed themes you might have.
You can not install any form of windows on the PS3
p3t
go to theme options and if you have downloaded it, it should be there.
Install it in your imagination
Just got to the number 1 resources for ps3 themes on google on your ps3 system
No
Install it
You can only install the downloadable ps3 games via the online store. no you can't you can do it by putting the CD in the ps3 console go to download go to download game and WA la
You can't have themes on the u600...
The PS3 has had updates that removed that capability from the older PS3 models unless that have stopped updating the PS3 console